{"id":32003,"date":"2026-08-11T20:36:53","date_gmt":"2026-08-11T11:36:53","guid":{"rendered":"https:\/\/genai-ai.co.jp\/ai-kanri\/?p=32003"},"modified":"2026-08-11T20:36:53","modified_gmt":"2026-08-11T11:36:53","slug":"cc-java-integer-types","status":"publish","type":"post","link":"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/cc-java-integer-types\/","title":{"rendered":"\u30102026\u5e748\u6708\u6700\u65b0\u3011Java\u306e\u6574\u6570\u578b(int\/long\/byte\/short)\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u4f7f\u3044\u5206\u3051\u30fb\u6700\u5927\u5024\u30fb\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u5bfe\u7b56"},"content":{"rendered":"\n<style>\n.g-flow-row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;}\n.g-flow-item{background:linear-gradient(135deg,#1a1a1a,#2a1015);color:#fff;border-radius:8px;padding:16px 14px;min-width:130px;flex:1;text-align:center;}\n.g-flow-arrow{color:#dc2626;font-size:20px;font-weight:700;}\n.g-card-row{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 32px;}\n.g-card-row>div{flex:1;min-width:220px;}\n@media(max-width:600px){\n  .g-flow-row{flex-direction:column;}\n  .g-flow-arrow{transform:rotate(90deg);}\n  .g-card-row{flex-direction:column;}\n  .g-card-row>div{min-width:100%;}\n}\n<\/style>\n\n\n\n<div style=\"margin:0 0 32px;\">\n  <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/08\/thumb-cc-java-integer-types.jpg\" alt=\"\u30102026\u5e748\u6708\u6700\u65b0\u3011Java\u306e\u6574\u6570\u578b(int\/long\/byte\/short)\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u4f7f\u3044\u5206\u3051\u30fb\u6700\u5927\u5024\u30fb\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u5bfe\u7b56\" style=\"width:100%;height:auto;border-radius:12px;display:block;\">\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u3067\u6574\u6570\u3092\u6271\u3046\u969b\u3001<strong>int\u30fblong\u30fbbyte\u30fbshort<\/strong>\u3068\u3044\u30464\u3064\u306e\u6574\u6570\u578b\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u3054\u5b58\u77e5\u3067\u3057\u3087\u3046\u304b\u3002\u300c\u6574\u6570\u306a\u3089int\u3060\u3051\u3067\u5341\u5206\u3067\u306f\uff1f\u300d\u3068\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u305d\u308c\u305e\u308c\u306b\u660e\u78ba\u306a\u5f79\u5272\u304c\u3042\u308a\u3001\u9078\u3073\u65b9\u3092\u8aa4\u308b\u3068\u300c\u7279\u5b9a\u306e\u6570\u5024\u3092\u8d85\u3048\u305f\u77ac\u9593\u306b\u8a08\u7b97\u7d50\u679c\u304c\u58ca\u308c\u308b\u300d\u3068\u3044\u3046\u6df1\u523b\u306a\u4e0d\u5177\u5408\u306b\u3064\u306a\u304c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u3001\u958b\u767a\u3092\u5916\u90e8\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u3084AI\u306b\u4efb\u305b\u308b\u7acb\u5834\u306e\u7d4c\u55b6\u8005\u30fb\u7ba1\u7406\u8077\u306b\u3068\u3063\u3066\u3001\u3053\u3046\u3057\u305f\u300c\u578b\u300d\u306e\u8a71\u306f\u7e01\u9060\u304f\u611f\u3058\u3089\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u5b9f\u969b\u306b\u306f\u3001\u4e8b\u696d\u304c\u6210\u9577\u3057\u6271\u3046\u30c7\u30fc\u30bf\u306e\u898f\u6a21\u304c\u5927\u304d\u304f\u306a\u308b\u306b\u3064\u308c\u3066\u3001\u3053\u306e\u57fa\u790e\u77e5\u8b58\u306e\u6709\u7121\u304c\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u904b\u7528\u3092\u5de6\u53f3\u3059\u308b\u5834\u9762\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001int\u30fblong\u30fbbyte\u30fbshort\u306e\u9055\u3044\u3001\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u306e\u4e00\u89a7\u3001\u4f7f\u3044\u5206\u3051\u306e\u57fa\u6e96\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\uff08\u6841\u3042\u3075\u308c\uff09\u304c\u8d77\u304d\u308b\u4ed5\u7d44\u307f\u3068\u5bfe\u7b56\u3001\u30ad\u30e3\u30b9\u30c8\uff08\u578b\u5909\u63db\uff09\u306e\u6ce8\u610f\u70b9\u307e\u3067\u3092\u3001\u30b3\u30fc\u30c9\u4ed8\u304d\u3067\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3055\u3089\u306b\u5f8c\u534a\u3067\u306f\u3001<strong>\u300c\u6570\u5024\u306e\u4e0a\u9650\u304c\u3042\u308b\u300d\u3068\u3044\u3046\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u5236\u7d04\u304c\u3001\u5b9f\u306f\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e\u91d1\u984d\u8a08\u7b97\u30fb\u5728\u5eab\u7ba1\u7406\u3068\u3044\u3063\u305f\u5b9f\u52d9\u306b\u76f4\u7d50\u3059\u308b\u30ea\u30b9\u30af\u3060<\/strong>\u3068\u3044\u3046\u8996\u70b9\u304b\u3089\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u304c\u3053\u306e\u77e5\u8b58\u3092\u6301\u3064\u610f\u5473\u3068\u3001Claude Code\u3067\u306e\u696d\u52d9\u81ea\u52d5\u5316\u3078\u306e\u6d3b\u304b\u3057\u65b9\u3092\u3001\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u306e\u5b9f\u4f8b\u3068\u3068\u3082\u306b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u6574\u6570\u578b\uff08Integer Type\uff09<\/strong>\uff1aJava\u306b\u304a\u3044\u3066\u3001\u5c0f\u6570\u70b9\u3092\u542b\u307e\u306a\u3044\u6570\u5024\uff08\u6574\u6570\uff09\u3092\u6271\u3046\u305f\u3081\u306e\u30c7\u30fc\u30bf\u578b\u306e\u7dcf\u79f0\u3002int\u30fblong\u30fbbyte\u30fbshort\u306e4\u7a2e\u985e\u304c\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u6271\u3048\u308b\u6570\u5024\u306e\u7bc4\u56f2\uff08\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\uff09\u3068\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u7528\u9014\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u578b\u3092\u9078\u3076\u3053\u3068\u304c\u3001\u6b63\u78ba\u3067\u52b9\u7387\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u524d\u63d0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Java\u306e\u6574\u6570\u578b4\u7a2e\u985e\u306e\u9055\u3044\u3092\u6574\u7406\u3057\u305f\u3046\u3048\u3067\u3001\u306a\u305c\u578b\u306e\u9078\u629e\u3092\u8aa4\u308b\u3068\u5371\u967a\u306a\u306e\u304b\u3001\u5b9f\u52d9\u76ee\u7dda\u3067\u306e\u610f\u5473\u3082\u542b\u3081\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300c\u578b\u300d\u3068\u3044\u3046\u8a00\u8449\u3092\u805e\u304f\u3068\u96e3\u3057\u304f\u611f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u5b9f\u306f\u300c\u3053\u306e\u7bb1\u306b\u306f\u3069\u308c\u304f\u3089\u3044\u306e\u5927\u304d\u3055\u306e\u6570\u5b57\u307e\u3067\u5165\u308c\u3089\u308c\u308b\u304b\u300d\u3068\u3044\u3046\u3001\u3068\u3066\u3082\u30b7\u30f3\u30d7\u30eb\u306a\u8a71\u3067\u3059\u3002\u3053\u306e\u5236\u7d04\u3092\u77e5\u3089\u305a\u306b\u6570\u5024\u8a08\u7b97\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u4f5c\u308b\u3068\u3001\u601d\u308f\u306c\u4e8b\u6545\u306b\u3064\u306a\u304c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u5c0e\u5165\u524d\u306b\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u524d\u63d0\u77e5\u8b58<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u984c\u306b\u5165\u308b\u524d\u306b\u4e00\u3064\u3060\u3051\u6574\u7406\u3057\u3066\u304a\u304d\u307e\u3059\u3002Java\u306b\u9650\u3089\u305a\u3001\u591a\u304f\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u306f\u300c\u6570\u5024\u3092\u4fdd\u5b58\u3059\u308b\u7bb1\u306e\u5927\u304d\u3055\u300d\u304c\u3042\u3089\u304b\u3058\u3081\u6c7a\u307e\u3063\u3066\u304a\u308a\u3001\u7121\u9650\u306b\u5927\u304d\u306a\u6570\u5024\u3092\u81ea\u7531\u306b\u6271\u3048\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u300c\u7bb1\u306e\u5927\u304d\u3055\u300d\u306e\u9055\u3044\u304c\u3001int\u30fblong\u30fbbyte\u30fbshort\u3068\u3044\u30464\u3064\u306e\u578b\u3068\u3057\u3066\u8868\u73fe\u3055\u308c\u3066\u3044\u308b\u3001\u3068\u3044\u3046\u306e\u304c\u3053\u306e\u8a18\u4e8b\u5168\u4f53\u3092\u8cab\u304f\u57fa\u672c\u7684\u306a\u8003\u3048\u65b9\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3092\u6700\u5f8c\u307e\u3067\u8aad\u3080\u3068\u3001\u6b21\u306e6\u3064\u304c\u660e\u78ba\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>int\u30fblong\u30fbbyte\u30fbshort<\/strong>\u305d\u308c\u305e\u308c\u306e\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u30fb\u30e1\u30e2\u30ea\u30b5\u30a4\u30ba<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>4\u3064\u306e\u6574\u6570\u578b\u306e<strong>\u4f7f\u3044\u5206\u3051\u306e\u57fa\u6e96<\/strong><\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\uff08\u6841\u3042\u3075\u308c\uff09<\/strong>\u304c\u8d77\u304d\u308b\u4ed5\u7d44\u307f\u3068\u5bfe\u7b56<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30ad\u30e3\u30b9\u30c8\uff08\u578b\u5909\u63db\uff09<\/strong>\u3067\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\u4ed5\u7d44\u307f\u3068\u6ce8\u610f\u70b9<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u6570\u5024\u578b\u306e\u5236\u7d04\u304c\u3001\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e<strong>\u91d1\u984d\u8a08\u7b97\u30fb\u5728\u5eab\u7ba1\u7406<\/strong>\u306b\u4e0e\u3048\u308b\u30ea\u30b9\u30af<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u5f0a\u793eGENAI\u304cClaude Code\u3067\u6570\u5024\u8a08\u7b97\u307e\u308f\u308a\u306e\u696d\u52d9\u3092\u3069\u3046\u81ea\u52d5\u5316\u3057\u3066\u3044\u308b\u304b<\/span><\/div>\n\n<\/div>\n\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&utm_medium=body_cta&utm_content=cc-java-integer-types&blog_slug=cc-java-integer-types\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=body_cta&utm_campaign=cc-java-integer-types&utm_content=body_cta-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n\n<div id=\"sec-01\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">01<\/span>\n  <span class=\"section-label\" style=\"display:block;\">FOUR TYPES<\/span>\n  <span class=\"section-title\" style=\"display:block;\">Java\u306e\u6574\u6570\u578b4\u7a2e\u985e\uff5c\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u30fb\u30e1\u30e2\u30ea\u30b5\u30a4\u30ba\u4e00\u89a7<\/span>\n  <span class=\"section-desc\">int\u30fblong\u30fbbyte\u30fbshort\u306e\u57fa\u672c\u3092\u4e00\u89a7\u3067\u62bc\u3055\u3048\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u306b\u306f\u3001\u6271\u3048\u308b\u6570\u5024\u306e\u7bc4\u56f2\u3068\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u7570\u306a\u308b4\u3064\u306e\u6574\u6570\u578b\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305a\u306f\u5168\u4f53\u50cf\u3092\u4e00\u89a7\u3067\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u578b<\/th><th>\u30e1\u30e2\u30ea\u30b5\u30a4\u30ba<\/th><th>\u6700\u5c0f\u5024<\/th><th>\u6700\u5927\u5024<\/th><th>\u4e3b\u306a\u7528\u9014<\/th><\/tr><\/thead>\n<tbody>\n<tr><td><strong>byte<\/strong><\/td><td>1\u30d0\u30a4\u30c8\uff088\u30d3\u30c3\u30c8\uff09<\/td><td>-128<\/td><td>127<\/td><td>\u30d5\u30a1\u30a4\u30eb\u30c7\u30fc\u30bf\u30fb\u753b\u50cf\u30c7\u30fc\u30bf\u306e1\u30d0\u30a4\u30c8\u5358\u4f4d\u51e6\u7406<\/td><\/tr>\n<tr><td><strong>short<\/strong><\/td><td>2\u30d0\u30a4\u30c8\uff0816\u30d3\u30c3\u30c8\uff09<\/td><td>-32,768<\/td><td>32,767<\/td><td>\u30e1\u30e2\u30ea\u7bc0\u7d04\u304c\u5fc5\u8981\u306a\u5834\u9762\uff08\u4f7f\u7528\u983b\u5ea6\u306f\u4f4e\u3044\uff09<\/td><\/tr>\n<tr><td><strong>int<\/strong><\/td><td>4\u30d0\u30a4\u30c8\uff0832\u30d3\u30c3\u30c8\uff09<\/td><td>\u7d04-21\u5104<\/td><td>\u7d0421\u5104<\/td><td>\u6574\u6570\u3092\u6271\u3046\u969b\u306e\u6a19\u6e96\u7684\u306a\u9078\u629e\u80a2<\/td><\/tr>\n<tr><td><strong>long<\/strong><\/td><td>8\u30d0\u30a4\u30c8\uff0864\u30d3\u30c3\u30c8\uff09<\/td><td>\u7d04-922\u4eac<\/td><td>\u7d04922\u4eac<\/td><td>\u5927\u304d\u306a\u6570\u5024\uff08\u4eba\u53e3\u30fb\u901a\u8ca8\u5358\u4f4d\u306e\u5408\u8a08\u7b49\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <pre style=\"margin:0;color:#d4d4d4;font-size:13px;line-height:1.8;font-family:'Consolas','Courier New',monospace;white-space:pre;\">\/\/ 4\u3064\u306e\u6574\u6570\u578b\u306e\u5ba3\u8a00\u4f8b\nbyte b = 100;             \/\/ -128 \u301c 127\nshort s = 30000;          \/\/ -32,768 \u301c 32,767\nint i = 2000000000;       \/\/ \u7d04-21\u5104 \u301c \u7d0421\u5104\nlong l = 9000000000000L;  \/\/ long\u578b\u306fL\u3092\u672b\u5c3e\u306b\u4ed8\u3051\u308b\uff08\u7d04-922\u4eac \u301c \u7d04922\u4eac\uff09\n\nSystem.out.println(b); \/\/ 100\nSystem.out.println(s); \/\/ 30000\nSystem.out.println(i); \/\/ 2000000000\nSystem.out.println(l); \/\/ 9000000000000\n\n\/\/ \u5404\u578b\u306e\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u3092\u5b9a\u6570\u3067\u78ba\u8a8d\u3059\u308b\nSystem.out.println(\"byte: \" + Byte.MIN_VALUE + \" \u301c \" + Byte.MAX_VALUE);\nSystem.out.println(\"short: \" + Short.MIN_VALUE + \" \u301c \" + Short.MAX_VALUE);\nSystem.out.println(\"int: \" + Integer.MIN_VALUE + \" \u301c \" + Integer.MAX_VALUE);\nSystem.out.println(\"long: \" + Long.MIN_VALUE + \" \u301c \" + Long.MAX_VALUE);<\/pre>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u30d3\u30c3\u30c8\uff08bit\uff09\u3068\u30d0\u30a4\u30c8\uff08byte\uff09<\/strong>\uff1a\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u304c\u30c7\u30fc\u30bf\u3092\u6271\u3046\u6700\u5c0f\u5358\u4f4d\u304c\u300c\u30d3\u30c3\u30c8\u300d\u3067\u30010\u304b1\u306e\u3044\u305a\u308c\u304b\u3092\u8868\u3057\u307e\u3059\u30028\u30d3\u30c3\u30c8\uff1d1\u30d0\u30a4\u30c8\u3067\u3001\u6271\u3048\u308b\u6570\u5024\u306e\u7bc4\u56f2\u306f\u30d3\u30c3\u30c8\u6570\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002\u30d3\u30c3\u30c8\u6570\u304c\u591a\u3044\u307b\u3069\u3001\u3088\u308a\u5927\u304d\u306a\u6570\u5024\u3092\u8868\u73fe\u3067\u304d\u307e\u3059\u304c\u3001\u305d\u306e\u5206\u30e1\u30e2\u30ea\u3092\u591a\u304f\u6d88\u8cbb\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">1-1. \u306a\u305c\u6700\u5927\u5024\u304c\u4e2d\u9014\u534a\u7aef\u306a\u6570\u5b57\u306a\u306e\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">int\u578b\u306e\u6700\u5927\u5024\u304c\u300c\u7d0421\u5104\uff08\u6b63\u78ba\u306b\u306f2,147,483,647\uff09\u300d\u3068\u3044\u3046\u4e2d\u9014\u534a\u7aef\u306a\u6570\u5b57\u306a\u306e\u306f\u3001<strong>32\u30d3\u30c3\u30c8\u3067\u8868\u73fe\u3067\u304d\u308b\u6570\u5024\u306e\u7d44\u307f\u5408\u308f\u305b\u306e\u6570<\/strong>\u3067\u6c7a\u307e\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u300232\u30d3\u30c3\u30c8\u306f2\u306e32\u4e57\uff08\u7d0443\u5104\uff09\u901a\u308a\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u8868\u73fe\u3067\u304d\u3001\u6b63\u306e\u6570\u3068\u8ca0\u306e\u6570\u3067\u534a\u5206\u305a\u3064\u4f7f\u3046\u305f\u3081\u3001\u6700\u5927\u5024\u306f\u7d0421\u5104\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u7b26\u53f7\u4ed8\u304d\u6574\u6570\uff08Signed Integer\uff09<\/strong>\uff1aJava\u306e\u6574\u6570\u578b\u306f\u3001\u6b63\u306e\u6570\u3068\u8ca0\u306e\u6570\u306e\u4e21\u65b9\u3092\u8868\u73fe\u3067\u304d\u308b\u300c\u7b26\u53f7\u4ed8\u304d\u6574\u6570\u300d\u3067\u3059\u3002\u5168\u4f53\u306e\u30d3\u30c3\u30c8\u6570\u306e\u3046\u30611\u30d3\u30c3\u30c8\u3092\u7b26\u53f7\uff08\u30d7\u30e9\u30b9\u304b\u30de\u30a4\u30ca\u30b9\u304b\uff09\u306e\u8868\u73fe\u306b\u4f7f\u3046\u305f\u3081\u3001\u8868\u73fe\u3067\u304d\u308b\u6b63\u306e\u6570\u306e\u6700\u5927\u5024\u306f\u3001\u5358\u7d14\u306a2\u9032\u6570\u306e\u7d44\u307f\u5408\u308f\u305b\u6570\u306e\u534a\u5206\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u304cint\u306e\u6700\u5927\u5024\u304c\u7d0421\u5104\uff0843\u5104\u306e\u534a\u5206\uff09\u306b\u306a\u308b\u7406\u7531\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">1-2. \u306a\u305c4\u7a2e\u985e\u3082\u578b\u3092\u5206\u3051\u3066\u3044\u308b\u306e\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cint\u4e00\u3064\u3067\u7d71\u4e00\u3059\u308c\u3070\u3044\u3044\u306e\u3067\u306f\u300d\u3068\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001byte\u30fbshort\u306e\u3088\u3046\u306a\u5c0f\u3055\u3044\u578b\u3092\u7528\u610f\u3057\u3066\u3044\u308b\u7406\u7531\u306f<strong>\u30e1\u30e2\u30ea\u306e\u7bc0\u7d04<\/strong>\u306b\u3042\u308a\u307e\u3059\u3002\u5927\u91cf\u306e\u30c7\u30fc\u30bf\uff08\u6570\u767e\u4e07\u4ef6\u898f\u6a21\u306e\u914d\u5217\u306a\u3069\uff09\u3092\u6271\u3046\u5834\u5408\u30011\u3064\u3042\u305f\u308a\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u5dee\u304c\u7a4d\u307f\u91cd\u306a\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u73fe\u4ee3\u306e\u4e00\u822c\u7684\u306a\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30e1\u30e2\u30ea\u5bb9\u91cf\u304c\u6f64\u6ca2\u306a\u305f\u3081\u3001\u3053\u306e\u6700\u9069\u5316\u3092\u610f\u8b58\u3059\u308b\u5834\u9762\u306f\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&utm_medium=body_cta&utm_content=cc-java-integer-types&blog_slug=cc-java-integer-types\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=body_cta&utm_campaign=cc-java-integer-types&utm_content=body_cta-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n\n<div id=\"sec-02\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">02<\/span>\n  <span class=\"section-label\" style=\"display:block;\">HOW TO CHOOSE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">4\u3064\u306e\u6574\u6570\u578b\u306e\u4f7f\u3044\u5206\u3051\u306e\u57fa\u6e96<\/span>\n  <span class=\"section-desc\">\u57fa\u672c\u306fint\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066long\u30fbbyte\u30fbshort\u3092\u9078\u3076<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u52d9\u3067\u306f\u3001\u3053\u306e4\u3064\u306e\u578b\u3092\u3069\u3046\u4f7f\u3044\u5206\u3051\u308c\u3070\u3088\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\u3001<strong>\u300c\u307e\u305aint\u3092\u4f7f\u3044\u3001int\u306e\u7bc4\u56f2\uff08\u7d0421\u5104\uff09\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308c\u3070long\u306b\u5207\u308a\u66ff\u3048\u308b\u300d<\/strong>\u3068\u3044\u3046\u306e\u304c\u57fa\u672c\u65b9\u91dd\u3067\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u5224\u65ad\u57fa\u6e96<\/th><th>\u9078\u3076\u3079\u304d\u578b<\/th><th>\u5177\u4f53\u4f8b<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u901a\u5e38\u306e\u6574\u6570\uff0821\u5104\u4ee5\u4e0b\uff09\u3092\u6271\u3046<\/td><td>int<\/td><td>\u30ab\u30a6\u30f3\u30c8\u6570\u3001\u5e74\u9f62\u3001\u500b\u6570\u3001\u901a\u5e38\u306e\u58f2\u4e0a\u91d1\u984d\uff08\u5186\u5358\u4f4d\uff09<\/td><\/tr>\n<tr><td>21\u5104\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u6570\u5024<\/td><td>long<\/td><td>ID\u306e\u9023\u756a\uff08\u5927\u898f\u6a21\u30b7\u30b9\u30c6\u30e0\uff09\u3001\u30df\u30ea\u79d2\u5358\u4f4d\u306e\u65e5\u6642\u3001\u5927\u4f01\u696d\u306e\u5e74\u9593\u58f2\u4e0a\uff08\u5186\u5358\u4f4d\uff09<\/td><\/tr>\n<tr><td>\u30e1\u30e2\u30ea\u3092\u6975\u9650\u307e\u3067\u7bc0\u7d04\u3057\u305f\u3044\u5927\u91cf\u30c7\u30fc\u30bf<\/td><td>byte<\/td><td>\u753b\u50cf\u30fb\u97f3\u58f0\u30c7\u30fc\u30bf\u306e1\u30d0\u30a4\u30c8\u5358\u4f4d\u51e6\u7406\u3001\u5927\u91cf\u914d\u5217\u3067\u306e\u30e1\u30e2\u30ea\u6700\u9069\u5316<\/td><\/tr>\n<tr><td>\u307b\u307c\u4f7f\u308f\u306a\u3044\uff08int\u3067\u4ee3\u7528\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\uff09<\/td><td>short<\/td><td>\u30e1\u30e2\u30ea\u5236\u7d04\u306e\u53b3\u3057\u3044\u7d44\u307f\u8fbc\u307f\u6a5f\u5668\u7b49\u3001\u7279\u6b8a\u306a\u5834\u9762\u306e\u307f<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u8ff7\u3063\u305f\u3089\u300cint\u300d\u3092\u9078\u3079\u30709\u5272\u306f\u6b63\u89e3<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u5b9f\u52d9\u306e\u307b\u3068\u3093\u3069\u306e\u5834\u9762\u3067\u306f\u3001int\u578b\u3092\u9078\u3093\u3067\u304a\u3051\u3070\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002short\u578b\u306f\u73fe\u4ee3\u306e\u4e00\u822c\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u307b\u3068\u3093\u3069\u4f7f\u308f\u308c\u305a\u3001byte\u578b\u3082\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u306a\u3069\u7279\u6b8a\u306a\u5834\u9762\u306b\u9650\u3089\u308c\u307e\u3059\u3002\u300c\u5927\u304d\u306a\u6570\u5024\u3092\u6271\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u300d\u3060\u3051\u3092\u5224\u65ad\u57fa\u6e96\u306b\u3059\u308c\u3070\u5341\u5206\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5224\u65ad\u57fa\u6e96\u3092\u3055\u3089\u306b\u7c21\u5358\u306b\u8a00\u3044\u63db\u3048\u308b\u3068\u3001<strong>\u300c\u6841\u6570\u3067\u8003\u3048\u308b\u300d<\/strong>\u3068\u3044\u3046\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u300210\u6841\uff08\u7d0410\u5104\uff09\u3092\u660e\u3089\u304b\u306b\u8d85\u3048\u306a\u3044\u6570\u5024\u3067\u3042\u308c\u3070int\u300110\u6841\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308c\u3070\u8ff7\u308f\u305along\u3092\u9078\u3076\u3001\u3068\u3044\u3046\u30b7\u30f3\u30d7\u30eb\u306a\u30eb\u30fc\u30eb\u3067\u5b9f\u52d9\u4e0a\u306f\u307b\u307c\u56f0\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001long\u578b\u3092\u9078\u3093\u3060\u304b\u3089\u3068\u3044\u3063\u3066\u51e6\u7406\u901f\u5ea6\u304c\u5927\u304d\u304f\u52a3\u5316\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u73fe\u4ee3\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306f64\u30d3\u30c3\u30c8\u306elong\u578b\u306e\u8a08\u7b97\u3082\u9ad8\u901f\u306b\u51e6\u7406\u3067\u304d\u308b\u305f\u3081\u3001\u300c\u5ff5\u306e\u305f\u3081long\u306b\u3057\u3066\u304a\u304f\u300d\u3068\u3044\u3046\u9078\u629e\u306b\u5927\u304d\u306a\u30c7\u30e1\u30ea\u30c3\u30c8\u306f\u306a\u304f\u3001\u3080\u3057\u308d\u5c06\u6765\u306e\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u4fdd\u967a\u3068\u3057\u3066\u5408\u7406\u7684\u306a\u5224\u65ad\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2-1. long\u578b\u3092\u9078\u3076\u3079\u304d\u5178\u578b\u7684\u306a\u30b1\u30fc\u30b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">long\u578b\u304c\u5fc5\u8981\u306b\u306a\u308b\u5178\u578b\u4f8b\u306f\u3001<strong>\u65e5\u6642\u3092\u30df\u30ea\u79d2\u5358\u4f4d\u3067\u6271\u3046\u5834\u5408<\/strong>\u3067\u3059\u30021970\u5e741\u67081\u65e5\u304b\u3089\u306e\u7d4c\u904e\u30df\u30ea\u79d2\u6570\uff08Unix\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\uff09\u306f\u3001\u3059\u3067\u306bint\u578b\u306e\u6700\u5927\u5024\uff08\u7d0421\u5104\uff09\u3092\u8d85\u3048\u308b\u6841\u6570\u306b\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u3001long\u578b\u3067\u306a\u3051\u308c\u3070\u6b63\u78ba\u306b\u6271\u3048\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <pre style=\"margin:0;color:#d4d4d4;font-size:13px;line-height:1.8;font-family:'Consolas','Courier New',monospace;white-space:pre;\">\/\/ \u73fe\u5728\u6642\u523b\u3092\u30df\u30ea\u79d2\u3067\u53d6\u5f97\uff08long\u578b\u304c\u5fc5\u9808\uff09\nlong currentTimeMillis = System.currentTimeMillis();\nSystem.out.println(currentTimeMillis); \/\/ \u4f8b: 1786598400000\uff0821\u5104\u3092\u5927\u304d\u304f\u8d85\u3048\u308b\uff09\n\n\/\/ \u3082\u3057int\u3067\u53d7\u3051\u53d6\u308d\u3046\u3068\u3059\u308b\u3068\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308b\n\/\/ int wrongType = System.currentTimeMillis(); \/\/ \u30a8\u30e9\u30fc\uff01\u6841\u3042\u3075\u308c\u306e\u5371\u967a\n\n\/\/ \u5927\u4f01\u696d\u306e\u5e74\u9593\u58f2\u4e0a\uff08\u5186\u5358\u4f4d\uff09\u3092\u6271\u3046\u4f8b\nlong annualRevenue = 5000000000000L; \/\/ 5\u5146\u5186\uff08int\u3067\u306f\u8868\u73fe\u4e0d\u53ef\u80fd\uff09\nSystem.out.println(annualRevenue);<\/pre>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300cint\u578b\u3067\u4f5c\u3063\u305f\u30b7\u30b9\u30c6\u30e0\u304c\u3001\u6570\u5e74\u904b\u7528\u3057\u305f\u3089\u30a8\u30e9\u30fc\u306b\u306a\u3063\u305f\u300d\u3068\u3044\u3046\u30c8\u30e9\u30d6\u30eb\u306f\u3001\u5b9f\u306f\u65e5\u6642\u3084\u9023\u756aID\u304cint\u306e\u4e0a\u9650\u3092\u8d85\u3048\u305f\u3053\u3068\u304c\u539f\u56e0\u3067\u3042\u308b\u30b1\u30fc\u30b9\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u5c06\u6765\u7684\u306a\u6570\u5024\u306e\u4f38\u3073\u3092\u898b\u8d8a\u3057\u3066\u578b\u3092\u9078\u3076\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">2-2. byte\u578b\u30fbshort\u578b\u304c\u5411\u3044\u3066\u3044\u308b\u30b1\u30fc\u30b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">byte\u578b\u306f\u3001\u753b\u50cf\u30fb\u97f3\u58f0\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u306e\u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u30921\u30d0\u30a4\u30c8\u5358\u4f4d\u3067\u8aad\u307f\u66f8\u304d\u3059\u308b\u51e6\u7406\u3067\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u8eab\u3092\u300c\u610f\u5473\u306e\u3042\u308b\u6570\u5024\u300d\u3068\u3057\u3066\u3067\u306f\u306a\u304f\u300c\u30c7\u30fc\u30bf\u306e\u65ad\u7247\u300d\u3068\u3057\u3066\u6271\u3046\u5834\u9762\u304c\u4e2d\u5fc3\u3067\u3059\u3002short\u578b\u306f\u3001byte\u578b\u3088\u308a\u306f\u7bc4\u56f2\u304c\u5e83\u3044\u3082\u306e\u306e\u3001int\u3068\u306e\u4f7f\u3044\u5206\u3051\u306e\u57fa\u6e96\u304c\u66d6\u6627\u306b\u306a\u308a\u3084\u3059\u304f\u3001\u73fe\u4ee3\u306e\u958b\u767a\u73fe\u5834\u3067\u306e\u63a1\u7528\u4f8b\u306f\u591a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <pre style=\"margin:0;color:#d4d4d4;font-size:13px;line-height:1.8;font-family:'Consolas','Courier New',monospace;white-space:pre;\">\/\/ byte\u578b\u3092\u4f7f\u3046\u5178\u578b\u4f8b: \u30d5\u30a1\u30a4\u30eb\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\nimport java.io.FileInputStream;\nimport java.io.IOException;\n\ntry (FileInputStream fis = new FileInputStream(\"data.bin\")) {\n    byte[] buffer = new byte[1024]; \/\/ 1KB\u5206\u306e\u30d0\u30a4\u30c8\u914d\u5217\n    int bytesRead = fis.read(buffer);\n    System.out.println(bytesRead + \"\u30d0\u30a4\u30c8\u8aad\u307f\u8fbc\u307f\u307e\u3057\u305f\");\n} catch (IOException e) {\n    e.printStackTrace();\n}\n\n\/\/ short\u578b\u306fint\u3067\u4ee3\u7528\u3055\u308c\u308b\u3053\u3068\u304c\u307b\u3068\u3093\u3069\n\/\/ \u660e\u78ba\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308b\u5834\u5408\u306e\u307f\u4f7f\u7528\u3092\u691c\u8a0e\u3059\u308b\nshort temperature = -15; \/\/ \u4f8b: \u6c17\u6e29\u30c7\u30fc\u30bf\uff08\u7bc4\u56f2\u304c\u660e\u78ba\u306b\u9650\u5b9a\u3055\u308c\u308b\u5834\u5408\uff09<\/pre>\n<\/div>\n\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&utm_medium=body_cta&utm_content=cc-java-integer-types&blog_slug=cc-java-integer-types\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=body_cta&utm_campaign=cc-java-integer-types&utm_content=body_cta-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n\n<div id=\"sec-03\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">03<\/span>\n  <span class=\"section-label\" style=\"display:block;\">OVERFLOW<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\uff08\u6841\u3042\u3075\u308c\uff09\u304c\u8d77\u304d\u308b\u4ed5\u7d44\u307f\u3068\u5bfe\u7b56<\/span>\n  <span class=\"section-desc\">\u6700\u5927\u5024\u3092\u8d85\u3048\u308b\u3068\u3001\u9759\u304b\u306b\u9593\u9055\u3063\u305f\u5024\u306b\u306a\u308b<\/span>\n<\/h2>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306f\u30a8\u30e9\u30fc\u306b\u306a\u3089\u305a\u3001\u9759\u304b\u306b\u9593\u9055\u3063\u305f\u5024\u3092\u8fd4\u3059<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">Java\u306e\u6574\u6570\u578b\u306f\u3001\u6700\u5927\u5024\u3092\u8d85\u3048\u308b\u8a08\u7b97\u3092\u884c\u3063\u3066\u3082\u4f8b\u5916\uff08\u30a8\u30e9\u30fc\uff09\u3092\u767a\u751f\u3055\u305b\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u6700\u5c0f\u5024\u5074\u306b\u4e00\u5468\u3057\u3066\u3057\u307e\u3046\u300c\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u300d\u3068\u3044\u3046\u73fe\u8c61\u304c\u8d77\u304d\u3001\u6c17\u3065\u304b\u306a\u3044\u307e\u307e\u9593\u9055\u3063\u305f\u8a08\u7b97\u7d50\u679c\u3092\u4f7f\u3044\u7d9a\u3051\u3066\u3057\u307e\u3046\u5371\u967a\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <pre style=\"margin:0;color:#d4d4d4;font-size:13px;line-height:1.8;font-family:'Consolas','Courier New',monospace;white-space:pre;\">\/\/ int\u578b\u306e\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u4f8b\nint maxInt = Integer.MAX_VALUE; \/\/ 2147483647\nSystem.out.println(maxInt);       \/\/ 2147483647\nSystem.out.println(maxInt + 1);   \/\/ -2147483648\uff08\u6700\u5c0f\u5024\u306b\u4e00\u5468\u3057\u3066\u3057\u307e\u3046\uff01\uff09\n\n\/\/ byte\u578b\u306e\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u4f8b\uff08\u7bc4\u56f2\u304c\u72ed\u3044\u305f\u3081\u8d77\u304d\u3084\u3059\u3044\uff09\nbyte maxByte = 127;\nbyte overflowed = (byte)(maxByte + 1);\nSystem.out.println(overflowed); \/\/ -128\uff08127\u306e\u6b21\u304c-128\u306b\uff09\n\n\/\/ \u5b9f\u52d9\u3067\u3042\u308a\u304c\u3061\u306a\u4f8b: \u639b\u3051\u7b97\u3067\u306e\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\nint price = 1000000;      \/\/ \u5358\u4fa1100\u4e07\u5186\nint quantity = 1000000;   \/\/ \u6570\u91cf100\u4e07\u500b\nint total = price * quantity; \/\/ \u671f\u5f85\u5024\u306f1\u5146\u5186\u3060\u304c...\nSystem.out.println(total); \/\/ -727379968\uff08\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3067\u7570\u5e38\u306a\u5024\u306b\uff01\uff09\n\n\/\/ === \u5bfe\u7b561: long\u578b\u3067\u8a08\u7b97\u3059\u308b ===\nlong totalSafe = (long) price * quantity;\nSystem.out.println(totalSafe); \/\/ 1000000000000\uff08\u6b63\u3057\u30441\u5146\u5186\uff09\n\n\/\/ === \u5bfe\u7b562: Math.addExact\u7b49\u3067\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3092\u691c\u77e5\u3059\u308b\uff08Java8\u4ee5\u964d\uff09 ===\ntry {\n    int result = Math.addExact(Integer.MAX_VALUE, 1);\n} catch (ArithmeticException e) {\n    System.out.println(\"\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3092\u691c\u77e5: \" + e.getMessage());\n}<\/pre>\n<\/div>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u6700\u5927\u5024\u306b\u8fd1\u3044<br>\u6570\u5024\u3067\u8a08\u7b97<\/strong><br><span style=\"font-size:12px;\">int\u578b\u306e\u4e0a\u9650\u306b<br>\u8fd1\u3065\u304f<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u8a08\u7b97\u7d50\u679c\u304c<br>\u4e0a\u9650\u3092\u8d85\u3048\u308b<\/strong><br><span style=\"font-size:12px;\">\u30a8\u30e9\u30fc\u306f\u51fa\u306a\u3044<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u5024\u304c\u4e00\u5468\u3057\u3066<br>\u30de\u30a4\u30ca\u30b9\u306b<\/strong><br><span style=\"font-size:12px;\">\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc<br>\u767a\u751f<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u6c17\u3065\u304b\u305a<br>\u4f7f\u3044\u7d9a\u3051\u308b<\/strong><br><span style=\"font-size:12px;\">\u8aa4\u3063\u305f\u8a08\u7b97\u7d50\u679c\u304c<br>\u696d\u52d9\u306b\u5f71\u97ff<\/span><\/div>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\uff08\u6841\u3042\u3075\u308c\uff09<\/strong>\uff1a\u6570\u5024\u304c\u305d\u306e\u578b\u3067\u8868\u73fe\u3067\u304d\u308b\u7bc4\u56f2\uff08\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\uff09\u3092\u8d85\u3048\u305f\u3068\u304d\u306b\u8d77\u304d\u308b\u73fe\u8c61\u3002Java\u306e\u6574\u6570\u578b\u306f\u4f8b\u5916\u3092\u51fa\u3055\u305a\u306b\u53cd\u5bfe\u5074\u306e\u5024\u306b\u4e00\u5468\u3057\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u51fa\u306a\u3044\u307e\u307e\u8aa4\u3063\u305f\u8a08\u7b97\u7d50\u679c\u304c\u4f7f\u308f\u308c\u7d9a\u3051\u308b\u3068\u3044\u3046\u5384\u4ecb\u306a\u6027\u8cea\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&utm_medium=body_cta&utm_content=cc-java-integer-types&blog_slug=cc-java-integer-types\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=body_cta&utm_campaign=cc-java-integer-types&utm_content=body_cta-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n\n<div id=\"sec-04\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">04<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CASTING<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u30ad\u30e3\u30b9\u30c8\uff08\u578b\u5909\u63db\uff09\u3067\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\u4ed5\u7d44\u307f<\/span>\n  <span class=\"section-desc\">\u5927\u304d\u3044\u578b\u304b\u3089\u5c0f\u3055\u3044\u578b\u3078\u306e\u5909\u63db\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7570\u306a\u308b\u6574\u6570\u578b\u306e\u9593\u3067\u5024\u3092\u4ee3\u5165\u3059\u308b\u969b\u3001<strong>\u30ad\u30e3\u30b9\u30c8\uff08\u660e\u793a\u7684\u306a\u578b\u5909\u63db\uff09<\/strong>\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u300c\u5927\u304d\u3044\u578b\u304b\u3089\u5c0f\u3055\u3044\u578b\u300d\u3078\u306e\u5909\u63db\u3067\u306f\u3001\u53ce\u307e\u308a\u304d\u3089\u306a\u3044\u90e8\u5206\u306e\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\u70b9\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <pre style=\"margin:0;color:#d4d4d4;font-size:13px;line-height:1.8;font-family:'Consolas','Courier New',monospace;white-space:pre;\">\/\/ \u5c0f\u3055\u3044\u578b \u2192 \u5927\u304d\u3044\u578b\uff08\u6697\u9ed9\u7684\u306b\u5909\u63db\u3055\u308c\u308b\u3002\u5b89\u5168\uff09\nbyte b = 100;\nint i = b;  \/\/ byte\u304b\u3089int\u3078\u306f\u81ea\u52d5\u5909\u63dbOK\uff08\u60c5\u5831\u304c\u5931\u308f\u308c\u306a\u3044\uff09\nlong l = i; \/\/ int\u304b\u3089long\u3078\u3082\u81ea\u52d5\u5909\u63dbOK\n\n\/\/ \u5927\u304d\u3044\u578b \u2192 \u5c0f\u3055\u3044\u578b\uff08\u660e\u793a\u7684\u306a\u30ad\u30e3\u30b9\u30c8\u304c\u5fc5\u8981\u3002\u5371\u967a\uff09\nint bigNumber = 300;\n\/\/ byte smallNumber = bigNumber; \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\uff08\u660e\u793a\u7684\u30ad\u30e3\u30b9\u30c8\u304c\u5fc5\u8981\uff09\nbyte smallNumber = (byte) bigNumber; \/\/ \u30ad\u30e3\u30b9\u30c8\u306f\u66f8\u3051\u308b\u304c...\nSystem.out.println(smallNumber); \/\/ 44\uff08300\u306fbyte\u306e\u7bc4\u56f2\u5916\u306a\u306e\u3067\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\uff01\uff09\n\n\/\/ long \u2192 int \u306e\u30ad\u30e3\u30b9\u30c8\u3067\u3082\u540c\u69d8\u306e\u554f\u984c\u304c\u8d77\u304d\u3046\u308b\nlong bigLong = 5000000000L; \/\/ int\u306e\u7bc4\u56f2\uff08\u7d0421\u5104\uff09\u3092\u8d85\u3048\u308b\nint castedInt = (int) bigLong;\nSystem.out.println(castedInt); \/\/ 705032704\uff08\u6b63\u3057\u3044\u5024\u3067\u306f\u306a\u3044\uff01\uff09\n\n\/\/ \u5b89\u5168\u306a\u30ad\u30e3\u30b9\u30c8\u306e\u305f\u3081\u306b\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\nlong value = 5000000000L;\nif (value >= Integer.MIN_VALUE && value <= Integer.MAX_VALUE) {\n    int safeInt = (int) value;\n    System.out.println(\"\u5b89\u5168\u306b\u5909\u63db: \" + safeInt);\n} else {\n    System.out.println(\"\u7bc4\u56f2\u5916\u306e\u305f\u3081\u30ad\u30e3\u30b9\u30c8\u3067\u304d\u307e\u305b\u3093: \" + value);\n}<\/pre>\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u5927\u304d\u3044\u578b\u304b\u3089\u5c0f\u3055\u3044\u578b\u3078\u306e\u30ad\u30e3\u30b9\u30c8\u306f\u3001\u539f\u5247\u907f\u3051\u308b<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u5b9f\u52d9\u3067\u306f\u300c\u5927\u306f\u5c0f\u3092\u517c\u306d\u308b\u300d\u306e\u9006\u3067\u3001\u8ff7\u3063\u305f\u3089\u5927\u304d\u3044\u578b\uff08int\u30fblong\uff09\u3092\u4f7f\u3044\u3001\u5c0f\u3055\u3044\u578b\u3078\u306e\u5909\u63db\u306f\u6975\u529b\u907f\u3051\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002\u3069\u3046\u3057\u3066\u3082\u30ad\u30e3\u30b9\u30c8\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u5fc5\u305a\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3063\u3066\u304b\u3089\u5909\u63db\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u30ad\u30e3\u30b9\u30c8\u306b\u3088\u308b\u60c5\u5831\u6b20\u843d\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u3089\u306a\u3044\u305f\u3081\u898b\u843d\u3068\u3055\u308c\u304c\u3061\u3067\u3059\u3002\u300c\u578b\u5909\u63db\u3092\u66f8\u3044\u305f\u3089\u3001\u60f3\u5b9a\u5916\u306e\u5024\u306b\u306a\u3063\u305f\u300d\u3068\u3044\u3046\u7d4c\u9a13\u304c\u3042\u308b\u65b9\u306f\u3001\u4eca\u56de\u306e\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306e\u4ed5\u7d44\u307f\u3092\u601d\u3044\u51fa\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u30ad\u30e3\u30b9\u30c8\uff08\u578b\u5909\u63db\uff09<\/strong>\uff1a\u3042\u308b\u578b\u306e\u5024\u3092\u3001\u5225\u306e\u578b\u3068\u3057\u3066\u6271\u3048\u308b\u3088\u3046\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3002\u300c(byte) bigNumber\u300d\u306e\u3088\u3046\u306b\u3001\u5909\u63db\u5148\u306e\u578b\u540d\u3092\u62ec\u5f27\u3067\u56f2\u3093\u3067\u5024\u306e\u524d\u306b\u4ed8\u3051\u308b\u3053\u3068\u3067\u660e\u793a\u7684\u306a\u30ad\u30e3\u30b9\u30c8\u304c\u3067\u304d\u307e\u3059\u3002\u5c0f\u3055\u3044\u578b\u3078\u306e\u5909\u63db\u3067\u306f\u3001\u53ce\u307e\u308a\u304d\u3089\u306a\u3044\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">4-1. \u6697\u9ed9\u7684\u30ad\u30e3\u30b9\u30c8\u3068\u660e\u793a\u7684\u30ad\u30e3\u30b9\u30c8\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u306e\u30ad\u30e3\u30b9\u30c8\u306b\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u81ea\u52d5\u3067\u884c\u3046<strong>\u6697\u9ed9\u7684\u30ad\u30e3\u30b9\u30c8<\/strong>\u3068\u3001\u958b\u767a\u8005\u304c\u660e\u793a\u7684\u306b\u6307\u5b9a\u3059\u308b<strong>\u660e\u793a\u7684\u30ad\u30e3\u30b9\u30c8<\/strong>\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u300c\u5c0f\u3055\u3044\u578b\u2192\u5927\u304d\u3044\u578b\u300d\u306f\u60c5\u5831\u304c\u5931\u308f\u308c\u306a\u3044\u305f\u3081\u6697\u9ed9\u7684\u306b\u884c\u308f\u308c\u307e\u3059\u304c\u3001\u300c\u5927\u304d\u3044\u578b\u2192\u5c0f\u3055\u3044\u578b\u300d\u306f\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u958b\u767a\u8005\u304c\u610f\u56f3\u3092\u6301\u3063\u3066\u660e\u793a\u7684\u30ad\u30e3\u30b9\u30c8\u3092\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u4ed5\u7d44\u307f\u306f\u3001Java\u304c\u300c\u3046\u3063\u304b\u308a\u30df\u30b9\u300d\u3092\u9632\u3050\u305f\u3081\u306b\u610f\u56f3\u7684\u306b\u8a2d\u8a08\u3057\u3066\u3044\u308b\u5b89\u5168\u88c5\u7f6e\u3068\u3082\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&utm_medium=body_cta&utm_content=cc-java-integer-types&blog_slug=cc-java-integer-types\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=body_cta&utm_campaign=cc-java-integer-types&utm_content=body_cta-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n\n<div id=\"sec-05\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">05<\/span>\n  <span class=\"section-label\" style=\"display:block;\">WHY IT MATTERS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u3010\u72ec\u81ea\u3011\u6570\u5024\u578b\u306e\u5236\u7d04\u3092\u3001\u7d4c\u55b6\u8005\u304c\u7406\u89e3\u3057\u3066\u304a\u304f\u610f\u5473<\/span>\n  <span class=\"section-desc\">\u300c\u578b\u300d\u306e\u8a71\u306f\u3001\u5b9f\u306f\u91d1\u984d\u8a08\u7b97\u30fb\u5728\u5eab\u7ba1\u7406\u306e\u30ea\u30b9\u30af\u7ba1\u7406\u305d\u306e\u3082\u306e<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067\u7d39\u4ecb\u3057\u305fint\u30fblong\u30fbbyte\u30fbshort\u306e\u9055\u3044\u306f\u3001\u4e00\u898b\u3059\u308b\u3068\u30d7\u30ed\u30b0\u30e9\u30de\u3060\u3051\u304c\u6c17\u306b\u3059\u308c\u3070\u3088\u3044\u5c02\u9580\u77e5\u8b58\u306b\u898b\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u5b9f\u969b\u306b\u306f\u3001<strong>\u6570\u5024\u578b\u306e\u5236\u7d04\u306f\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u306b\u76f4\u7d50\u3059\u308b\u91cd\u8981\u306a\u8ad6\u70b9<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5-1. \u5b9f\u969b\u306b\u8d77\u304d\u305f\u300c\u6841\u3042\u3075\u308c\u300d\u30c8\u30e9\u30d6\u30eb\u306e\u5178\u578b\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e\u4e16\u754c\u3067\u306f\u3001int\u578b\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u308b\u91d1\u984d\u30fb\u4ef6\u6570\u3092\u6271\u3046\u30b7\u30b9\u30c6\u30e0\u3067\u3001\u60f3\u5b9a\u5916\u306e\u6841\u3042\u3075\u308c\u304c\u767a\u751f\u3059\u308b\u4e8b\u4f8b\u304c\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u3001<strong>\u7d2f\u8a08\u58f2\u4e0a\u30fb\u7d2f\u8a08\u30dd\u30a4\u30f3\u30c8\u30fb\u5927\u91cf\u306e\u5546\u54c1\u5728\u5eab\u6570<\/strong>\u3092\u6271\u3046\u30b7\u30b9\u30c6\u30e0\u3092\u9577\u671f\u9593\u904b\u7528\u3057\u3066\u3044\u308b\u3068\u3001\u5f53\u521d\u306f\u554f\u984c\u306a\u304b\u3063\u305f\u6570\u5024\u304c\u3001\u4e8b\u696d\u6210\u9577\u3068\u3068\u3082\u306bint\u306e\u4e0a\u9650\uff08\u7d0421\u5104\uff09\u306b\u8fd1\u3065\u3044\u3066\u3044\u304f\u3001\u3068\u3044\u3046\u30ea\u30b9\u30af\u304c\u6f5c\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u696d\u52d9\u30c7\u30fc\u30bf\u306e\u4f8b<\/th><th>\u6841\u3042\u3075\u308c\u304c\u8d77\u304d\u308b\u30ea\u30b9\u30af<\/th><th>\u5bfe\u7b56\u306e\u8003\u3048\u65b9<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u7d2f\u8a08\u58f2\u4e0a\u91d1\u984d\uff08\u5186\u5358\u4f4d\uff09<\/td><td>21\u5104\u5186\u3092\u8d85\u3048\u308b\u3068int\u3067\u306f\u8868\u73fe\u4e0d\u53ef<\/td><td>\u6700\u521d\u304b\u3089long\u578b\u3067\u8a2d\u8a08\u3059\u308b<\/td><\/tr>\n<tr><td>\u30dd\u30a4\u30f3\u30c8\u30fb\u30de\u30a4\u30eb\u7b49\u306e\u7d2f\u8a08\u4ed8\u4e0e\u6570<\/td><td>\u5927\u91cf\u767a\u884c\u304c\u7d9a\u304f\u3068\u4e0a\u9650\u306b\u5230\u9054\u3057\u3046\u308b<\/td><td>\u5c06\u6765\u306e\u6210\u9577\u3092\u898b\u8fbc\u3093\u3060\u578b\u9078\u629e<\/td><\/tr>\n<tr><td>\u5546\u54c1ID\u306e\u9023\u756a<\/td><td>\u30b5\u30fc\u30d3\u30b9\u304c\u9577\u671f\u904b\u7528\u3055\u308c\u308b\u3068ID\u6570\u304c\u5897\u52a0<\/td><td>long\u578b\u307e\u305f\u306f\u6587\u5b57\u5217\u578b\u306eID\u63a1\u7528<\/td><\/tr>\n<tr><td>\u30df\u30ea\u79d2\u5358\u4f4d\u306e\u65e5\u6642\u30c7\u30fc\u30bf<\/td><td>\u3059\u3067\u306bint\u306e\u4e0a\u9650\u3092\u8d85\u3048\u3066\u3044\u308b<\/td><td>\u5fc5\u305along\u578b\u3092\u4f7f\u7528\uff08Java\u306e\u6a19\u6e96\u4ed5\u69d8\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u300c\u4eca\u306f\u5927\u4e08\u592b\u300d\u304c\u6570\u5e74\u5f8c\u306b\u554f\u984c\u306b\u306a\u308b<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u6841\u3042\u3075\u308c\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u6642\u70b9\u3067\u306f\u554f\u984c\u304c\u8868\u9762\u5316\u3057\u306a\u3044\u3053\u3068\u304c\u307b\u3068\u3093\u3069\u3067\u3059\u3002\u4e8b\u696d\u304c\u6210\u9577\u3057\u3001\u6271\u3046\u6570\u5024\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u521d\u3081\u3066\u767a\u899a\u3059\u308b\u305f\u3081\u3001\u767a\u898b\u304c\u9045\u308c\u308b\u307b\u3069\u4fee\u6b63\u30b3\u30b9\u30c8\u304c\u5927\u304d\u304f\u306a\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u6bb5\u968e\u3067\u306f\u3001\u5c06\u6765\u306e\u6570\u5024\u306e\u4f38\u3073\u3092\u898b\u8d8a\u3057\u305f\u578b\u9078\u629e\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3046\u3057\u305f\u30ea\u30b9\u30af\u3092\u672a\u7136\u306b\u9632\u3050\u305f\u3081\u306e\u8003\u3048\u65b9\u3092\u6574\u7406\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6d41\u308c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u73fe\u72b6\u306e\u6570\u5024<br>\u898f\u6a21\u3092\u628a\u63e1<\/strong><br><span style=\"font-size:12px;\">\u73fe\u5728\u306e\u58f2\u4e0a\u30fb<br>\u4ef6\u6570\u3092\u78ba\u8a8d<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u5c06\u6765\u306e\u4f38\u3073\u3092<br>\u898b\u7a4d\u3082\u308b<\/strong><br><span style=\"font-size:12px;\">\u4e8b\u696d\u8a08\u753b\u304b\u3089<br>\u6570\u5e74\u5f8c\u3092\u4e88\u6e2c<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u4f59\u88d5\u3092\u6301\u3063\u305f<br>\u578b\u3092\u9078\u629e<\/strong><br><span style=\"font-size:12px;\">\u8ff7\u3063\u305f\u3089long\u578b<br>\u3092\u9078\u3076<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u5b9a\u671f\u7684\u306b<br>\u8a2d\u8a08\u3092\u898b\u76f4\u3059<\/strong><br><span style=\"font-size:12px;\">\u4e8b\u696d\u6210\u9577\u306b\u5fdc\u3058\u3066<br>\u518d\u78ba\u8a8d<\/span><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">5-2. \u7d4c\u55b6\u8005\u304c\u3053\u306e\u77e5\u8b58\u3092\u6301\u3064\u30e1\u30ea\u30c3\u30c8<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d4c\u55b6\u8005\u30fb\u7ba1\u7406\u8077\u81ea\u8eab\u304c\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001<strong>\u300c\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u5c06\u6765\u306e\u6570\u5024\u306e\u4f38\u3073\u306b\u8010\u3048\u3089\u308c\u308b\u8a2d\u8a08\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u300d\u3092\u767a\u6ce8\u6642\u30fb\u30ec\u30d3\u30e5\u30fc\u6642\u306b\u554f\u3044\u304b\u3051\u3089\u308c\u308b<\/strong>\u3060\u3051\u3067\u3001\u5c06\u6765\u7684\u306a\u30b7\u30b9\u30c6\u30e0\u30c8\u30e9\u30d6\u30eb\u306e\u30ea\u30b9\u30af\u3092\u5927\u304d\u304f\u6e1b\u3089\u305b\u307e\u3059\u3002\u5916\u90e8\u306e\u30d9\u30f3\u30c0\u30fc\u306b\u958b\u767a\u3092\u4f9d\u983c\u3059\u308b\u969b\u3082\u3001\u3053\u306e\u8996\u70b9\u3092\u6301\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u3001\u8981\u4ef6\u5b9a\u7fa9\u306e\u8cea\u304c\u5909\u308f\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u3092\u5916\u90e8\u306b\u4f9d\u983c\u3059\u308b\u7d4c\u55b6\u8005\u306e\u65b9\u306b\u306f\u3001\u300c\u5c06\u6765\u4e8b\u696d\u304c10\u500d\u6210\u9577\u3057\u3066\u3082\u3001\u3053\u306e\u6570\u5024\u7ba1\u7406\u306e\u4ed5\u7d44\u307f\u306f\u58ca\u308c\u307e\u305b\u3093\u304b\uff1f\u300d\u3068\u4e00\u8a00\u805e\u3044\u3066\u307f\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002\u3053\u306e\u8cea\u554f\u4e00\u3064\u3067\u3001\u958b\u767a\u8005\u5074\u306e\u8a2d\u8a08\u306e\u4e01\u5be7\u3055\u304c\u3042\u308b\u7a0b\u5ea6\u898b\u3048\u3066\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">5-3. \u300c\u578b\u300d\u3092\u8efd\u8996\u3059\u308b\u3068\u8d77\u304d\u308b\u5178\u578b\u7684\u306a\u4e8b\u6545\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u304c\u898b\u805e\u304d\u3057\u3066\u304d\u305f\u4e8b\u4f8b\u306e\u4e2d\u306b\u306f\u3001\u300c\u30bb\u30fc\u30eb\u6642\u306e\u30a2\u30af\u30bb\u30b9\u96c6\u4e2d\u3067\u30dd\u30a4\u30f3\u30c8\u4ed8\u4e0e\u6570\u304c\u60f3\u5b9a\u3092\u5927\u304d\u304f\u8d85\u3048\u3001\u96c6\u8a08\u51e6\u7406\u3067\u7570\u5e38\u306a\u6570\u5024\u304c\u8868\u793a\u3055\u308c\u305f\u300d\u300c\u8907\u6570\u5e97\u8217\u306e\u5728\u5eab\u30c7\u30fc\u30bf\u3092\u5408\u7b97\u3059\u308b\u30d0\u30c3\u30c1\u51e6\u7406\u3067\u3001\u5927\u578b\u9023\u4f11\u660e\u3051\u306b\u6841\u3042\u3075\u308c\u304c\u8d77\u304d\u305f\u300d\u3068\u3044\u3063\u305f\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u3044\u305a\u308c\u3082\u3001\u958b\u767a\u6642\u70b9\u3067\u306f\u60f3\u5b9a\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u898f\u6a21\u306e\u6570\u5024\u304c\u767a\u751f\u3057\u305f\u3053\u3068\u304c\u5f15\u304d\u91d1\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3046\u3057\u305f\u4e8b\u6545\u306e\u591a\u304f\u306f\u3001<strong>\u300c\u958b\u767a\u6642\u70b9\u3067\u60f3\u5b9a\u3057\u3066\u3044\u305f\u6570\u5024\u306e\u898f\u6a21\u300d\u3068\u300c\u5b9f\u969b\u306e\u4e8b\u696d\u6210\u9577\u5f8c\u306e\u6570\u5024\u306e\u898f\u6a21\u300d\u306b\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u307e\u308c\u305f<\/strong>\u3053\u3068\u304c\u6839\u672c\u539f\u56e0\u3067\u3059\u3002\u4e8b\u696d\u8a08\u753b\u3092\u6700\u3082\u3088\u304f\u7406\u89e3\u3057\u3066\u3044\u308b\u7d4c\u55b6\u8005\u30fb\u7ba1\u7406\u8077\u304c\u3001\u3053\u306e\u8996\u70b9\u3092\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u306e\u521d\u671f\u6bb5\u968e\u3067\u5171\u6709\u3067\u304d\u308c\u3070\u3001\u9632\u3052\u308b\u4e8b\u6545\u306f\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5-4. \u300c\u578b\u300d\u306e\u8a71\u3092\u3001\u4e8b\u696d\u8a08\u753b\u3068\u30bb\u30c3\u30c8\u3067\u8003\u3048\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u306e\u8981\u4ef6\u5b9a\u7fa9\u306b\u304a\u3044\u3066\u3001\u300c\u4eca\u5f8c3\u5e74\u3067\u30e6\u30fc\u30b6\u30fc\u6570\u309210\u500d\u306b\u3059\u308b\u300d\u300c\u7d2f\u8a08\u53d6\u6271\u9ad8\u3092100\u5104\u5186\u898f\u6a21\u307e\u3067\u4f38\u3070\u3059\u300d\u3068\u3044\u3063\u305f\u4e8b\u696d\u8a08\u753b\u306e\u6570\u5024\u76ee\u6a19\u306f\u3001\u5b9f\u306f\u305d\u306e\u307e\u307e\u30b7\u30b9\u30c6\u30e0\u306e\u578b\u8a2d\u8a08\u306e\u5224\u65ad\u6750\u6599\u306b\u306a\u308a\u307e\u3059\u3002\u4e8b\u696d\u8a08\u753b\u3068\u30b7\u30b9\u30c6\u30e0\u306e\u6570\u5024\u8a2d\u8a08\u3092\u5207\u308a\u96e2\u3057\u3066\u8003\u3048\u308b\u306e\u3067\u306f\u306a\u304f\u3001<strong>\u30bb\u30c3\u30c8\u3067\u691c\u8a0e\u3059\u308b<\/strong>\u3053\u3068\u3067\u3001\u5c06\u6765\u306e\u6841\u3042\u3075\u308c\u30ea\u30b9\u30af\u3092\u4e8b\u524d\u306b\u6f70\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u3001\u8cc7\u91d1\u8abf\u9054\u3084\u4e8b\u696d\u62e1\u5927\u306e\u30d5\u30a7\u30fc\u30ba\u306b\u3042\u308b\u4f01\u696d\u3067\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u60f3\u5b9a\u3059\u308b\u6570\u5024\u306e\u4e0a\u9650\u304c\u3001\u4e8b\u696d\u6210\u9577\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u3001\u958b\u767a\u521d\u671f\u306e\u6bb5\u968e\u3067\u78ba\u8a8d\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&utm_medium=body_cta&utm_content=cc-java-integer-types&blog_slug=cc-java-integer-types\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=body_cta&utm_campaign=cc-java-integer-types&utm_content=body_cta-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n\n<div id=\"sec-06\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">06<\/span>\n  <span class=\"section-label\" style=\"display:block;\">GENAI CASE DATA<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u3010\u72ec\u81ea\u30c7\u30fc\u30bf\u3011GENAI\u3067\u306e\u6570\u5024\u8a08\u7b97\u696d\u52d9\u306eAI\u6d3b\u7528\u4e8b\u4f8b<\/span>\n  <span class=\"section-desc\">Claude Code\u3067\u6570\u5024\u306e\u6271\u3044\u3092\u542b\u3080\u696d\u52d9\u30c4\u30fc\u30eb\u3092\u3069\u3046\u4f5c\u3063\u3066\u3044\u308b\u304b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u3067\u3082\u3001\u7d4c\u7406\u30fb\u5e83\u544a\u904b\u7528\u306e\u30c7\u30fc\u30bf\u96c6\u8a08\u306a\u3069\u3001\u6570\u5024\u8a08\u7b97\u3092\u4f34\u3046\u696d\u52d9\u30c4\u30fc\u30eb\u3092Claude Code\u3067\u4f5c\u6210\u30fb\u904b\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u3001\u3053\u3046\u3057\u305f\u6ce8\u610f\u70b9\u3092\u8e0f\u307e\u3048\u305f\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3055\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u5e83\u544a\u904b\u7528\u30c7\u30fc\u30bf\u306e\u3088\u3046\u306b\u3001\u65e5\u3005\u306e\u6570\u5024\u304c\u7a4d\u307f\u4e0a\u304c\u3063\u3066\u3044\u304f\u6027\u8cea\u306e\u30c7\u30fc\u30bf\u306f\u3001\u6570\u30f6\u6708\u301c\u6570\u5e74\u5358\u4f4d\u3067\u904b\u7528\u3092\u7d9a\u3051\u308b\u3046\u3061\u306b\u3001\u5f53\u521d\u60f3\u5b9a\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u898f\u6a21\u306b\u9054\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5f0a\u793e\u3067\u306f\u3001\u3053\u3046\u3057\u305f\u300c\u7a4d\u307f\u4e0a\u304c\u3063\u3066\u3044\u304f\u7cfb\u300d\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u30b9\u30af\u30ea\u30d7\u30c8\u306b\u306f\u3001\u6700\u521d\u304b\u3089long\u578b\u3092\u6a19\u6e96\u3067\u63a1\u7528\u3059\u308b\u793e\u5185\u30eb\u30fc\u30eb\u3092\u8a2d\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u696d\u52d9\u9818\u57df<\/th><th>Claude Code\u3078\u306e\u4f9d\u983c\u5185\u5bb9<\/th><th>\u6570\u5024\u306e\u6271\u3044\u3067\u610f\u8b58\u3057\u305f\u30dd\u30a4\u30f3\u30c8<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u7d4c\u7406\u30c7\u30fc\u30bf\u96c6\u8a08<\/td><td>\u8907\u6570\u62e0\u70b9\u306e\u58f2\u4e0a\u3092\u5408\u7b97\u3059\u308b\u30b9\u30af\u30ea\u30d7\u30c8<\/td><td>\u5c06\u6765\u306e\u58f2\u4e0a\u6210\u9577\u3092\u898b\u8d8a\u3057\u305f\u578b\u9078\u629e\u306e\u78ba\u8a8d<\/td><\/tr>\n<tr><td>\u5e83\u544a\u30ec\u30dd\u30fc\u30c8<\/td><td>\u6708\u6b21\u306e\u30af\u30ea\u30c3\u30af\u6570\u30fb\u8cbb\u7528\u306e\u7d2f\u8a08\u8a08\u7b97<\/td><td>\u9577\u671f\u904b\u7528\u3067\u306e\u30c7\u30fc\u30bf\u5897\u52a0\u3092\u8003\u616e<\/td><\/tr>\n<tr><td>\u5728\u5eab\u7ba1\u7406<\/td><td>\u5546\u54c1\u3054\u3068\u306e\u5728\u5eab\u6570\u96c6\u8a08\u30c4\u30fc\u30eb<\/td><td>\u6841\u3042\u3075\u308c\u304c\u8d77\u304d\u306a\u3044\u7bc4\u56f2\u3067\u306e\u8a2d\u8a08<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">Claude Code\u306b\u300c\u6841\u3042\u3075\u308c\u5bfe\u7b56\u300d\u3092\u660e\u793a\u7684\u306b\u4f9d\u983c\u3059\u308b<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u300c\u3053\u306e\u58f2\u4e0a\u96c6\u8a08\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u3001\u5c06\u6765\u6570\u5024\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3082\u6841\u3042\u3075\u308c\u3057\u306a\u3044\u3088\u3046\u306b\u66f8\u3044\u3066\u300d\u3068\u4e00\u8a00\u6dfb\u3048\u308b\u3060\u3051\u3067\u3001Claude Code\u306f\u9069\u5207\u306a\u578b\u9078\u629e\u3084\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u5bfe\u7b56\u3092\u542b\u3081\u305f\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u5c02\u9580\u7528\u8a9e\u3092\u77e5\u3089\u306a\u304f\u3066\u3082\u3001\u300c\u5c06\u6765\u7684\u306b\u6570\u5b57\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3082\u5927\u4e08\u592b\u306a\u3088\u3046\u306b\u300d\u3068\u4f1d\u3048\u308b\u3060\u3051\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u306e\u7d4c\u7406\u696d\u52d9\u3067\u306f\u3001\u8907\u6570\u62e0\u70b9\u306e\u6708\u6b21\u58f2\u4e0a\u3092\u4e00\u3064\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u5408\u7b97\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u62e0\u70b9\u6570\u306e\u5897\u52a0\u3084\u53d6\u6271\u9ad8\u306e\u62e1\u5927\u3092\u898b\u8fbc\u3093\u3067\u3001\u5f53\u521d\u304b\u3089long\u578b\u3092\u7528\u3044\u305f\u8a2d\u8a08\u3092Claude Code\u306b\u6307\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u7d50\u679c\u3068\u3057\u3066\u3001\u4e8b\u696d\u62e1\u5927\u306e\u305f\u3073\u306b\u96c6\u8a08\u30ed\u30b8\u30c3\u30af\u3092\u4f5c\u308a\u76f4\u3059\u624b\u9593\u304c\u767a\u751f\u305b\u305a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4fdd\u5b88\u30b3\u30b9\u30c8\u3092\u6291\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u65b9\u304c\u610f\u8b58\u3059\u3079\u304d\u306f\u3001\u30b3\u30fc\u30c9\u306e\u7d30\u90e8\u3067\u306f\u306a\u304f\u300c\u5c06\u6765\u3053\u306e\u6570\u5b57\u306f\u3069\u3053\u307e\u3067\u5927\u304d\u304f\u306a\u308a\u3046\u308b\u304b\u300d\u3092\u696d\u52d9\u62c5\u5f53\u8005\u3068\u3057\u3066\u628a\u63e1\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u60c5\u5831\u3055\u3048AI\u306b\u4f1d\u3048\u3089\u308c\u308c\u3070\u3001\u9069\u5207\u306a\u8a2d\u8a08\u306fAI\u5074\u304c\u62c5\u3063\u3066\u304f\u308c\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u3067\u306f\u5b9f\u969b\u306b\u3001\u65e2\u5b58\u306e\u7d4c\u7406\u96c6\u8a08\u30b9\u30af\u30ea\u30d7\u30c8\u3092Claude Code\u306b\u30ec\u30d3\u30e5\u30fc\u3055\u305b\u3001\u300c\u5c06\u6765\u306e\u4e8b\u696d\u898f\u6a21\u3067\u3082\u5b89\u5168\u306b\u52d5\u4f5c\u3059\u308b\u304b\u300d\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u904b\u7528\u3082\u53d6\u308a\u5165\u308c\u3066\u3044\u307e\u3059\u3002\u4eba\u9593\u304c\u4e00\u3064\u3072\u3068\u3064\u306e\u30b3\u30fc\u30c9\u3092\u8aad\u3093\u3067\u578b\u306e\u59a5\u5f53\u6027\u3092\u78ba\u8a8d\u3059\u308b\u306e\u306f\u9aa8\u304c\u6298\u308c\u308b\u4f5c\u696d\u3067\u3059\u304c\u3001AI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3067\u3042\u308c\u3070\u6570\u5343\u884c\u898f\u6a21\u306e\u30b3\u30fc\u30c9\u3067\u3082\u77ed\u6642\u9593\u3067\u30c1\u30a7\u30c3\u30af\u304c\u53ef\u80fd\u3067\u3059\u3002\u3053\u3046\u3057\u305f\u300c\u5b88\u308a\u306eAI\u6d3b\u7528\u300d\u3082\u3001\u696d\u52d9\u52b9\u7387\u5316\u3068\u540c\u3058\u304f\u3089\u3044\u4fa1\u5024\u306e\u3042\u308b\u4f7f\u3044\u65b9\u3060\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u653b\u3081\u306eAI\u6d3b\u7528\uff08\u696d\u52d9\u3092\u65b0\u305f\u306b\u81ea\u52d5\u5316\u3059\u308b\uff09\u300d\u3068\u300c\u5b88\u308a\u306eAI\u6d3b\u7528\uff08\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u306e\u30ea\u30b9\u30af\u3092\u70b9\u691c\u3059\u308b\uff09\u300d\u306f\u3001\u3069\u3061\u3089\u3082\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u304c\u4e3b\u4f53\u7684\u306b\u95a2\u308f\u308c\u308b\u9818\u57df\u3067\u3059\u3002\u7279\u306b\u5b88\u308a\u306e\u6d3b\u7528\u306f\u3001\u5c02\u9580\u7684\u306a\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u306e\u30b9\u30ad\u30eb\u304c\u306a\u304f\u3066\u3082\u3001\u300c\u5c06\u6765\u6570\u5024\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3082\u5927\u4e08\u592b\u304b\u78ba\u8a8d\u3057\u3066\u300d\u3068\u3044\u3046\u4e00\u8a00\u3067AI\u306b\u4efb\u305b\u3089\u308c\u308b\u70b9\u3067\u3001\u975e\u5e38\u306b\u59cb\u3081\u3084\u3059\u3044\u6d3b\u7528\u65b9\u6cd5\u3060\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305fint\u30fblong\u30fbbyte\u30fbshort\u306e\u9055\u3044\u3092\u5b8c\u74a7\u306b\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5927\u5207\u306a\u306e\u306f\u3001\u300c\u6570\u5024\u306b\u306f\u6271\u3048\u308b\u7bc4\u56f2\u306e\u9650\u754c\u304c\u3042\u308b\u300d\u3068\u3044\u3046\u4e00\u3064\u306e\u4e8b\u5b9f\u3092\u982d\u306e\u7247\u9685\u306b\u7f6e\u3044\u3066\u304a\u304f\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&utm_medium=body_cta&utm_content=cc-java-integer-types&blog_slug=cc-java-integer-types\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=body_cta&utm_campaign=cc-java-integer-types&utm_content=body_cta-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n\n<div id=\"sec-07\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">07<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CONCLUSION<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u307e\u3068\u3081 \u2500\u2500 \u300c\u578b\u300d\u306e\u77e5\u8b58\u306f\u3001\u696d\u52d9\u30ea\u30b9\u30af\u7ba1\u7406\u306e\u8996\u70b9\u306b\u3082\u306a\u308b<\/span>\n  <span class=\"section-desc\">\u6570\u5024\u306e\u4e0a\u9650\u3092\u610f\u8b58\u3059\u308b\u3053\u3068\u304c\u3001\u5805\u7262\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u7b2c\u4e00\u6b69<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Java\u306e\u6574\u6570\u578bint\u30fblong\u30fbbyte\u30fbshort\u306e\u9055\u3044\u3001\u4f7f\u3044\u5206\u3051\u306e\u57fa\u6e96\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306e\u4ed5\u7d44\u307f\u3068\u5bfe\u7b56\u3001\u30ad\u30e3\u30b9\u30c8\u306e\u6ce8\u610f\u70b9\u3001\u305d\u3057\u3066\u6570\u5024\u578b\u306e\u5236\u7d04\u304c\u696d\u52d9\u306b\u3082\u305f\u3089\u3059\u30ea\u30b9\u30af\u307e\u3067\u3092\u6574\u7406\u3057\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u30dd\u30a4\u30f3\u30c8\u3092\u632f\u308a\u8fd4\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>int\u30fblong\u30fbbyte\u30fbshort\u306f\u3001\u6271\u3048\u308b\u6570\u5024\u306e\u7bc4\u56f2\u3068\u30e1\u30e2\u30ea\u30b5\u30a4\u30ba\u304c\u7570\u306a\u308b4\u3064\u306e\u6574\u6570\u578b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u8ff7\u3063\u305f\u3089int\u3092\u9078\u3073\u300121\u5104\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308c\u3070long\u306b\u5207\u308a\u66ff\u3048\u308b\u306e\u304c\u57fa\u672c<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306f\u30a8\u30e9\u30fc\u3092\u51fa\u3055\u305a\u306b\u9759\u304b\u306b\u9593\u9055\u3063\u305f\u5024\u3092\u8fd4\u3059\u305f\u3081\u767a\u898b\u304c\u9045\u308c\u3084\u3059\u3044<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u5927\u304d\u3044\u578b\u304b\u3089\u5c0f\u3055\u3044\u578b\u3078\u306e\u30ad\u30e3\u30b9\u30c8\u306f\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\u305f\u3081\u3001\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\u304c\u5fc5\u8981<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u7d2f\u8a08\u58f2\u4e0a\u30fb\u30dd\u30a4\u30f3\u30c8\u30fb\u65e5\u6642\u30c7\u30fc\u30bf\u306a\u3069\u3001\u4e8b\u696d\u6210\u9577\u3068\u3068\u3082\u306b\u6841\u3042\u3075\u308c\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u308b\u30c7\u30fc\u30bf\u304c\u3042\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u7d4c\u55b6\u8005\u304c\u300c\u5c06\u6765\u306e\u6570\u5024\u306e\u4f38\u3073\u306b\u8010\u3048\u3089\u308c\u308b\u304b\u300d\u3092\u554f\u3044\u304b\u3051\u308b\u3060\u3051\u3067\u30b7\u30b9\u30c6\u30e0\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u305b\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>Claude Code\u306b\u300c\u6841\u3042\u3075\u308c\u3057\u306a\u3044\u3088\u3046\u306b\u300d\u3068\u4f1d\u3048\u308b\u3060\u3051\u3067\u3001\u9069\u5207\u306a\u8a2d\u8a08\u306e\u30b3\u30fc\u30c9\u304c\u5f97\u3089\u308c\u308b<\/span><\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">int\u30fblong\u30fbbyte\u30fbshort\u3068\u3044\u3046\u578b\u306e\u9055\u3044\u306f\u3001\u4e00\u898b\u5730\u5473\u306a\u5c02\u9580\u77e5\u8b58\u306b\u898b\u3048\u307e\u3059\u304c\u3001<strong>\u300c\u3053\u306e\u6570\u5b57\u306f\u5c06\u6765\u3069\u3053\u307e\u3067\u5927\u304d\u304f\u306a\u308a\u3046\u308b\u304b\u300d\u3092\u8003\u3048\u308b\u7fd2\u6163<\/strong>\u305d\u306e\u3082\u306e\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u306b\u9650\u3089\u305a\u3001\u4e8b\u696d\u8a08\u753b\u3084\u5728\u5eab\u7ba1\u7406\u306e\u5834\u9762\u3067\u3082\u5f79\u7acb\u3064\u8996\u70b9\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305f\u8003\u3048\u65b9\u3092\u3001\u305c\u3072\u81ea\u793e\u306e\u30b7\u30b9\u30c6\u30e0\u904b\u7528\u306e\u632f\u308a\u8fd4\u308a\u306b\u3082\u6d3b\u304b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u65e5\u304b\u3089\u3067\u304d\u308b\u6700\u521d\u306e\u4e00\u6b69\u3068\u3057\u3066\u3001\u73fe\u5728\u81ea\u793e\u3067\u4f7f\u3063\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u306e\u3046\u3061\u3001\u7d2f\u8a08\u5024\u3084\u9023\u756aID\u3092\u6271\u3063\u3066\u3044\u308b\u753b\u9762\u3092\u4e00\u3064\u601d\u3044\u6d6e\u304b\u3079\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u300c\u3053\u306e\u6570\u5b57\u306f\u3001\u4e8b\u696d\u304c\u4eca\u306e10\u500d\u306b\u306a\u3063\u3066\u3082\u6b63\u3057\u304f\u8868\u793a\u3055\u308c\u7d9a\u3051\u308b\u3060\u308d\u3046\u304b\u300d\u2014\u2014\u305d\u306e\u554f\u3044\u3092\u62c5\u5f53\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u3084\u958b\u767a\u30d9\u30f3\u30c0\u30fc\u306b\u6295\u3052\u304b\u3051\u3066\u307f\u308b\u3060\u3051\u3067\u3082\u3001\u5c06\u6765\u306e\u30ea\u30b9\u30af\u306b\u6c17\u3065\u304f\u304d\u3063\u304b\u3051\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u3067\u306f\u300cAI\u9b3c\u7ba1\u7406\u300d\u3068\u3044\u3046\u30b5\u30fc\u30d3\u30b9\u3067\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u30fb\u7ba1\u7406\u8077\u306e\u65b9\u306b\u5411\u3051\u3066\u3001\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u76f8\u8ac7\u304b\u3089Claude Code\u3067\u306e\u5b9f\u88c5\u307e\u3067\u4f34\u8d70\u652f\u63f4\u3057\u3066\u3044\u307e\u3059\u3002\u300c\u4eca\u306e\u30b7\u30b9\u30c6\u30e0\u304c\u3053\u306e\u5148\u3082\u5b89\u5fc3\u3057\u3066\u4f7f\u3048\u308b\u304b\u4e0d\u5b89\u300d\u3068\u3044\u3046\u6bb5\u968e\u304b\u3089\u3067\u3082\u3001\u304a\u6c17\u8efd\u306b\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u300c\u5c06\u6765\u3082\u5b89\u5fc3\u3057\u3066\u4f7f\u3048\u308b\u304b\u300d\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6570\u5024\u8a2d\u8a08\u3092\u4e00\u7dd2\u306b\u898b\u76f4\u3057\u307e\u305b\u3093\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6841\u3042\u3075\u308c\u306e\u3088\u3046\u306a\u30ea\u30b9\u30af\u306f\u3001\u4e8b\u696d\u304c\u6210\u9577\u3057\u3066\u304b\u3089\u8868\u9762\u5316\u3059\u308b\u3053\u3068\u304c\u307b\u3068\u3093\u3069\u3067\u3059\u3002<br>\u4eca\u306e\u3046\u3061\u306b\u3001\u8cb4\u793e\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u6570\u5024\u8a2d\u8a08\u3092\u4e00\u7dd2\u306b\u78ba\u8a8d\u3057\u3066\u307f\u307e\u305b\u3093\u304b\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300c\u767a\u6ce8\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u306e\u4e2d\u8eab\u304c\u30d6\u30e9\u30c3\u30af\u30dc\u30c3\u30af\u30b9\u3067\u4e0d\u5b89\u300d\u3068\u3044\u3046\u65b9\u306b\u5411\u3051\u3066\u3001\u696d\u52d9\u30c7\u30fc\u30bf\u306e\u6271\u3044\u65b9\u306e\u76f8\u8ac7\u304b\u3089\u3001Claude Code\u3067\u306e\u6539\u5584\u63d0\u6848\u307e\u3067\u3001\u7121\u6599\u76f8\u8ac7\u3067\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u5148\u306e\u9032\u3081\u65b9\u306f\u3001\u5927\u304d\u304f2\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u81ea\u793e\u3067\u56de\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044\u65b9<\/strong>\u306f\u3001<strong>AI\u9b3c\u7ba1\u7406<\/strong>\u3067Claude Code\uff0fCodex\u306e\u4f7f\u3044\u65b9\u304b\u3089\u696d\u52d9\u8a2d\u8a08\u30fb\u793e\u5185\u5b9a\u7740\u307e\u3067\u4f34\u8d70\u3092\u53d7\u3051\u306a\u304c\u3089\u3001\u793e\u5185\u306b\u4ed5\u7d44\u307f\u3092\u4f5c\u308b\u9053\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u899a\u3048\u308b\u3088\u308a\u4efb\u305b\u305f\u3044\u65b9<\/strong>\u306f\u3001<strong>AIBPO by AI\u9b3c\u7ba1\u7406<\/strong>\u3067\u3053\u306e\u8a18\u4e8b\u306e\u3088\u3046\u306a\u5b9a\u578b\u696d\u52d9\u3092\u4e38\u3054\u3068\u9810\u3051\u308b\u9053\u304c\u3042\u308a\u307e\u3059\u3002\u7dcf\u984d\u306f\u3044\u307e\u306e\u696d\u52d9\u30b3\u30b9\u30c8\u306e70\u301c80%\u304c\u76ee\u5b89\u3001\u6708\u984d\u57fa\u672c\u6599\u306f0\u5186\u3067\u3059\u3002<\/p>\n<p>\u3069\u3061\u3089\u304c\u5408\u3046\u304b\u306f\u3001\u696d\u52d9\u91cf\u3068\u793e\u5185\u4f53\u5236\u6b21\u7b2c\u3067\u3059\u3002\u7121\u6599\u76f8\u8ac7\u30fb\u7121\u6599\u9069\u5408\u8a3a\u65ad\u3067\u3001\u8cb4\u793e\u306e\u5834\u5408\u306f\u3069\u3061\u3089\u304c\u5411\u304f\u304b\u304b\u3089\u3054\u76f8\u8ac7\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fff;border:2px solid #eee;border-radius:16px;padding:32px 20px;margin:48px 0 16px;\">\n  <p style=\"text-align:center;font-size:13px;font-weight:700;color:#dc2626;letter-spacing:2px;margin:0 0 12px;\">NEXT STEP<\/p>\n  <p style=\"text-align:center;font-size:22px;font-weight:800;line-height:1.5;color:#1a1a1a;margin:0 0 24px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u3001\u3042\u306a\u305f\u306e\u30d3\u30b8\u30cd\u30b9\u3067<br>\u5b9f\u8df5\u3057\u3066\u307f\u307e\u305b\u3093\u304b\uff1f<\/p>\n  <div style=\"display:flex;gap:16px;flex-wrap:wrap;justify-content:center;\">\n    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-onikanri.png\" alt=\"AI\u9b3c\u7ba1\u7406 \u2014 Claude Code\u5c0e\u5165\u652f\u63f4\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\n        <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">AI\u6d3b\u7528\u3092\u81ea\u793e\u3067\u56de\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044\u65b9\u3078<\/p>\n        <p style=\"font-size:20px;font-weight:800;color:#1a1a1a;margin:0 0 12px;\">AI\u9b3c\u7ba1\u7406<\/p>\n        <p style=\"font-size:14px;color:#555;margin:0 0 20px;line-height:1.7;\">Claude Code\u30fbCowork\u5c0e\u5165\u652f\u63f4\u304b\u3089\u696d\u52d9\u8a2d\u8a08\u30fb\u793e\u5185\u6d78\u900f\u307e\u3067\u5b9f\u8df5\u30d9\u30fc\u30b9\u3067\u4f34\u8d70\u3002\u300c\u81ea\u793e\u3067\u56de\u305b\u308b\u7d44\u7e54\u300d\u309290\u65e5\u3067\u4f5c\u308b\u7d4c\u55b6\u8005\u5411\u3051\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3002<\/p>\n        <div style=\"text-align:center;margin-top:auto;\">\n          <a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=article&utm_campaign=cc-java-integer-types&utm_content=next-step-cta\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AI\u9b3c\u7ba1\u7406\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-aibpo.png\" alt=\"AIBPO by AI\u9b3c\u7ba1\u7406 \u2014 \u5b9a\u578b\u696d\u52d9\u306e\u4e38\u3054\u3068\u4ee3\u884c\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\n        <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">\u696d\u52d9\u3092\u4e38\u3054\u3068\u4efb\u305b\u305f\u3044\u65b9\u3078<\/p>\n        <p style=\"font-size:20px;font-weight:800;color:#1a1a1a;margin:0 0 12px;\">AIBPO by AI\u9b3c\u7ba1\u7406<\/p>\n        <p style=\"font-size:14px;color:#555;margin:0 0 20px;line-height:1.7;\">\u8acb\u6c42\u51e6\u7406\u30fb\u30c7\u30fc\u30bf\u5165\u529b\u30fb\u554f\u3044\u5408\u308f\u305b\u5bfe\u5fdc\u306a\u3069\u306e\u5b9a\u578b\u696d\u52d9\u3092\u3001AI\u00d7\u4eba\u306e\u54c1\u8cea\u7ba1\u7406\u4f53\u5236\u3067\u4e38\u3054\u3068\u4ee3\u884c\u3002\u3044\u307e\u306e\u30b3\u30b9\u30c8\u306e75%\u76ee\u5b89\u3067\u3001\u65e5\u3005\u306f\u6210\u679c\u7269\u3092\u627f\u8a8d\u3059\u308b\u3060\u3051\u3002<\/p>\n        <div style=\"text-align:center;margin-top:auto;\">\n          <a href=\"https:\/\/genai-ai.co.jp\/ai-kanri\/ai-bpo\/?utm_source=blog&utm_medium=article&utm_campaign=cc-java-integer-types&utm_content=next-step-cta-bpo\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AIBPO\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q. Java\u3067int\u578b\u3068long\u578b\u3001\u7d50\u5c40\u3069\u3061\u3089\u3092\u4f7f\u3048\u3070\u3044\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u57fa\u672c\u7684\u306b\u306fint\u578b\u3092\u4f7f\u3044\u3001\u6271\u3046\u6570\u5024\u304c\u7d0421\u5104\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\uff08\u7d2f\u8a08\u91d1\u984d\u3001\u65e5\u6642\u306e\u30df\u30ea\u79d2\u8868\u73fe\u3001\u5927\u898f\u6a21\u306aID\u9023\u756a\u306a\u3069\uff09\u306flong\u578b\u3092\u9078\u3073\u307e\u3059\u3002\u8ff7\u3063\u305f\u5834\u5408\u306f\u3001\u5c06\u6765\u7684\u306a\u6570\u5024\u306e\u4f38\u3073\u3092\u898b\u8d8a\u3057\u3066long\u578b\u3092\u9078\u3093\u3067\u304a\u304f\u65b9\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u304c\u8d77\u304d\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3001\u3069\u3046\u3084\u3063\u3066\u78ba\u8a8d\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u901a\u5e38\u306e\u6f14\u7b97\u3067\u306f\u30a8\u30e9\u30fc\u304c\u51fa\u306a\u3044\u305f\u3081\u3001\u8a08\u7b97\u7d50\u679c\u304c\u660e\u3089\u304b\u306b\u304a\u304b\u3057\u3044\uff08\u30de\u30a4\u30ca\u30b9\u306b\u306a\u308b\u3001\u6975\u7aef\u306b\u5c0f\u3055\u3044\u5024\u306b\u306a\u308b\uff09\u5834\u5408\u306f\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3092\u7591\u3044\u307e\u3059\u3002Java8\u4ee5\u964d\u306eMath.addExact()\u3084Math.multiplyExact()\u3092\u4f7f\u3046\u3068\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u767a\u751f\u6642\u306b\u4f8b\u5916\u3092\u6295\u3052\u3066\u691c\u77e5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. byte\u578b\u3084short\u578b\u306f\u3001\u5b9f\u52d9\u3067\u3069\u306e\u304f\u3089\u3044\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u4e00\u822c\u7684\u306a\u696d\u52d9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u3001byte\u578b\u30fbshort\u578b\u306e\u4f7f\u7528\u983b\u5ea6\u306f\u9ad8\u304f\u3042\u308a\u307e\u305b\u3093\u3002byte\u578b\u306f\u30d5\u30a1\u30a4\u30eb\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u66f8\u304d\u306a\u3069\u7279\u6b8a\u306a\u5834\u9762\u3067\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u901a\u5e38\u306e\u6570\u5024\u8a08\u7b97\u3067\u306fint\u307e\u305f\u306flong\u3092\u4f7f\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u306a\u305cint\u578b\u306e\u6700\u5927\u5024\u306f\u300c\u7d0421\u5104\u300d\u3068\u3044\u3046\u4e2d\u9014\u534a\u7aef\u306a\u6570\u5b57\u306a\u306e\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. int\u578b\u306f32\u30d3\u30c3\u30c8\u3067\u6570\u5024\u3092\u8868\u73fe\u3057\u3066\u304a\u308a\u300132\u30d3\u30c3\u30c8\u3067\u8868\u73fe\u3067\u304d\u308b\u7d44\u307f\u5408\u308f\u305b\u306e\u6570\uff082\u306e32\u4e57\uff09\u3092\u6b63\u306e\u6570\u3068\u8ca0\u306e\u6570\u3067\u5206\u3051\u5408\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002\u6b63\u78ba\u306a\u6700\u5927\u5024\u306f2,147,483,647\u3067\u3001\u3053\u308c\u306f2\u306e31\u4e57\u304b\u30891\u3092\u5f15\u3044\u305f\u6570\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u672a\u7d4c\u9a13\u306e\u7d4c\u55b6\u8005\u3067\u3082\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306e\u30ea\u30b9\u30af\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u30b3\u30fc\u30c9\u3092\u66f8\u304f\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u300c\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u5c06\u6765\u306e\u6570\u5024\u306e\u4f38\u3073\u306b\u8010\u3048\u3089\u308c\u308b\u8a2d\u8a08\u304b\u300d\u3068\u3044\u3046\u8996\u70b9\u3092\u6301\u3063\u3066\u304a\u304f\u3053\u3068\u306f\u6709\u76ca\u3067\u3059\u3002\u7279\u306b\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u3092\u5916\u90e8\u306b\u4f9d\u983c\u3059\u308b\u969b\u3001\u3053\u306e\u8996\u70b9\u3092\u6301\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u8981\u4ef6\u5b9a\u7fa9\u306e\u8cea\u304c\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. Claude Code\u306b\u6570\u5024\u8a08\u7b97\u306e\u30b3\u30fc\u30c9\u3092\u4f9d\u983c\u3059\u308b\u969b\u3001\u4f55\u3092\u4f1d\u3048\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u300c\u5c06\u6765\u3053\u306e\u6570\u5b57\u304c\u3069\u3053\u307e\u3067\u5927\u304d\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u300d\u3092\u4f1d\u3048\u308b\u3060\u3051\u3067\u5341\u5206\u3067\u3059\u3002\u4f8b\u3048\u3070\u300c\u7d2f\u8a08\u58f2\u4e0a\u306f\u5c06\u6765100\u5104\u5186\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u300d\u3068\u4f1d\u3048\u308c\u3070\u3001Claude Code\u304c\u9069\u5207\u306a\u578b\uff08long\u578b\uff09\u3092\u9078\u3093\u3067\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Java\u3067int\u578b\u3068long\u578b\u3001\u7d50\u5c40\u3069\u3061\u3089\u3092\u4f7f\u3048\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u57fa\u672c\u7684\u306b\u306fint\u578b\u3092\u4f7f\u3044\u3001\u6271\u3046\u6570\u5024\u304c\u7d0421\u5104\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\uff08\u7d2f\u8a08\u91d1\u984d\u3001\u65e5\u6642\u306e\u30df\u30ea\u79d2\u8868\u73fe\u3001\u5927\u898f\u6a21\u306aID\u9023\u756a\u306a\u3069\uff09\u306flong\u578b\u3092\u9078\u3073\u307e\u3059\u3002\u8ff7\u3063\u305f\u5834\u5408\u306f\u3001\u5c06\u6765\u7684\u306a\u6570\u5024\u306e\u4f38\u3073\u3092\u898b\u8d8a\u3057\u3066long\u578b\u3092\u9078\u3093\u3067\u304a\u304f\u65b9\u304c\u5b89\u5168\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u304c\u8d77\u304d\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3001\u3069\u3046\u3084\u3063\u3066\u78ba\u8a8d\u3067\u304d\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u901a\u5e38\u306e\u6f14\u7b97\u3067\u306f\u30a8\u30e9\u30fc\u304c\u51fa\u306a\u3044\u305f\u3081\u3001\u8a08\u7b97\u7d50\u679c\u304c\u660e\u3089\u304b\u306b\u304a\u304b\u3057\u3044\uff08\u30de\u30a4\u30ca\u30b9\u306b\u306a\u308b\u3001\u6975\u7aef\u306b\u5c0f\u3055\u3044\u5024\u306b\u306a\u308b\uff09\u5834\u5408\u306f\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3092\u7591\u3044\u307e\u3059\u3002Java8\u4ee5\u964d\u306eMath.addExact()\u3084Math.multiplyExact()\u3092\u4f7f\u3046\u3068\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u767a\u751f\u6642\u306b\u4f8b\u5916\u3092\u6295\u3052\u3066\u691c\u77e5\u3067\u304d\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"byte\u578b\u3084short\u578b\u306f\u3001\u5b9f\u52d9\u3067\u3069\u306e\u304f\u3089\u3044\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u4e00\u822c\u7684\u306a\u696d\u52d9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u3001byte\u578b\u30fbshort\u578b\u306e\u4f7f\u7528\u983b\u5ea6\u306f\u9ad8\u304f\u3042\u308a\u307e\u305b\u3093\u3002byte\u578b\u306f\u30d5\u30a1\u30a4\u30eb\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u66f8\u304d\u306a\u3069\u7279\u6b8a\u306a\u5834\u9762\u3067\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u901a\u5e38\u306e\u6570\u5024\u8a08\u7b97\u3067\u306fint\u307e\u305f\u306flong\u3092\u4f7f\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u306a\u305cint\u578b\u306e\u6700\u5927\u5024\u306f\u300c\u7d0421\u5104\u300d\u3068\u3044\u3046\u4e2d\u9014\u534a\u7aef\u306a\u6570\u5b57\u306a\u306e\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"int\u578b\u306f32\u30d3\u30c3\u30c8\u3067\u6570\u5024\u3092\u8868\u73fe\u3057\u3066\u304a\u308a\u300132\u30d3\u30c3\u30c8\u3067\u8868\u73fe\u3067\u304d\u308b\u7d44\u307f\u5408\u308f\u305b\u306e\u6570\uff082\u306e32\u4e57\uff09\u3092\u6b63\u306e\u6570\u3068\u8ca0\u306e\u6570\u3067\u5206\u3051\u5408\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002\u6b63\u78ba\u306a\u6700\u5927\u5024\u306f2,147,483,647\u3067\u3001\u3053\u308c\u306f2\u306e31\u4e57\u304b\u30891\u3092\u5f15\u3044\u305f\u6570\u306b\u306a\u308a\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u672a\u7d4c\u9a13\u306e\u7d4c\u55b6\u8005\u3067\u3082\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306e\u30ea\u30b9\u30af\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u300c\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u5c06\u6765\u306e\u6570\u5024\u306e\u4f38\u3073\u306b\u8010\u3048\u3089\u308c\u308b\u8a2d\u8a08\u304b\u300d\u3068\u3044\u3046\u8996\u70b9\u3092\u6301\u3063\u3066\u304a\u304f\u3053\u3068\u306f\u6709\u76ca\u3067\u3059\u3002\u7279\u306b\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u3092\u5916\u90e8\u306b\u4f9d\u983c\u3059\u308b\u969b\u3001\u3053\u306e\u8996\u70b9\u3092\u6301\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u8981\u4ef6\u5b9a\u7fa9\u306e\u8cea\u304c\u5909\u308f\u308a\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Claude Code\u306b\u6570\u5024\u8a08\u7b97\u306e\u30b3\u30fc\u30c9\u3092\u4f9d\u983c\u3059\u308b\u969b\u3001\u4f55\u3092\u4f1d\u3048\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u300c\u5c06\u6765\u3053\u306e\u6570\u5b57\u304c\u3069\u3053\u307e\u3067\u5927\u304d\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u300d\u3092\u4f1d\u3048\u308b\u3060\u3051\u3067\u5341\u5206\u3067\u3059\u3002\u4f8b\u3048\u3070\u300c\u7d2f\u8a08\u58f2\u4e0a\u306f\u5c06\u6765100\u5104\u5186\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u300d\u3068\u4f1d\u3048\u308c\u3070\u3001Claude Code\u304c\u9069\u5207\u306a\u578b\uff08long\u578b\uff09\u3092\u9078\u3093\u3067\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3057\u3066\u304f\u308c\u307e\u3059\u3002\"\n      }\n    }\n  ]\n}\n<\/script>\n\n\n","protected":false},"excerpt":{"rendered":"<p>Java\u306e\u6574\u6570\u578bint\u30fblong\u30fbbyte\u30fbshort\u306e\u9055\u3044\u3001\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u3001\u4f7f\u3044\u5206\u3051\u306e\u57fa\u6e96\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\uff08\u6841\u3042\u3075\u308c\uff09\u5bfe\u7b56\u3001\u30ad\u30e3\u30b9\u30c8\u306e\u6ce8\u610f\u70b9\u3092\u30b3\u30fc\u30c9\u4ed8\u304d\u3067\u89e3\u8aac\u3002\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u5411\u3051\u306b\u3001\u6570\u5024\u578b\u306e\u5236\u7d04\u304c\u5b9f\u52d9\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u3068Claude Code\u3067\u306e\u696d\u52d9\u81ea\u52d5\u5316\u3078\u306e\u6d3b\u304b\u3057\u65b9\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":32002,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"sitemap_hide":"","_veu_custom_css":"","vkexunit_cta_each_option":"","footnotes":"","rank_math_description":"Java\u306e\u6574\u6570\u578bint\u30fblong\u30fbbyte\u30fbshort\u306e\u9055\u3044\u3001\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u3001\u4f7f\u3044\u5206\u3051\u306e\u57fa\u6e96\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\uff08\u6841\u3042\u3075\u308c\uff09\u5bfe\u7b56\u3001\u30ad\u30e3\u30b9\u30c8\u306e\u6ce8\u610f\u70b9\u3092\u30b3\u30fc\u30c9\u4ed8\u304d\u3067\u89e3\u8aac\u3002\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u5411\u3051\u306b\u3001\u6570\u5024\u578b\u306e\u5236\u7d04\u304c\u5b9f\u52d9\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u3068Claude 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